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#1 2017-03-03 15:56:52

pk926
Contributor
Registered: 2017-01-08
Posts: 19

[Discover one key]

Can I get the key of one specific sector by just sniffing the authentication of one block of that sector?

best,
Pedro Cabral

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#2 2017-03-04 12:08:27

iceman
Administrator
Registered: 2013-04-25
Posts: 9,468
Website

Re: [Discover one key]

yes.

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#3 2017-03-04 20:01:41

pk926
Contributor
Registered: 2017-01-08
Posts: 19

Re: [Discover one key]

How? can you explain me?
If you prefer on monday i send you the trace and you explain me?

best,
Pedro Cabral

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#4 2017-03-04 20:59:54

iceman
Administrator
Registered: 2013-04-25
Posts: 9,468
Website

Re: [Discover one key]

I suggest you search the forum for your answer.

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#5 2017-03-05 02:13:52

tristanik
Contributor
Registered: 2014-11-25
Posts: 96

Re: [Discover one key]

interesting question

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#6 2017-03-06 18:22:07

pk926
Contributor
Registered: 2017-01-08
Posts: 19

Re: [Discover one key]

Hello again,

from trace i got this.

   49794084 |   49796452 | Tag |04  00                                                           |     |           
   49808788 |   49814676 | Tag |00  00  00  01  01                                               |     |           
   49847556 |   49851076 | Tag |08  b6  dd                                                       |     |           
   50572612 |   50577348 | Tag |a6  99  36  58                                                   |     |           
   50589252 |   50593924 | Tag |7d! a3  0e  8d                                                   |     |           
   51070468 |   51075204 | Tag |0f! ed  75  3f!                                                  |     |           
   51087124 |   51091860 | Tag |04! 7e  4c! f9!                                                  |     |           
   51568468 |   51573204 | Tag |5a! 22  55  18!                                                  |     |           
   51585124 |   51589796 | Tag |25! 3e! e4  92!                                                  |     |

i know that card authenticates on 4 different sectors 1,3,5 and 7.

can you help me?

best,
Pedro Cabral

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#7 2017-03-06 18:36:45

iceman
Administrator
Registered: 2013-04-25
Posts: 9,468
Website

Re: [Discover one key]

That trace has only "tag" responses.  Its useless.

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#8 2017-03-06 19:07:13

pk926
Contributor
Registered: 2017-01-08
Posts: 19

Re: [Discover one key]

ok, so this proves that this system is not vulnerable to MITM.

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#9 2017-03-06 19:15:51

iceman
Administrator
Registered: 2013-04-25
Posts: 9,468
Website

Re: [Discover one key]

no, it proves that the sniff went wrong, nothing else.

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#10 2017-03-09 13:20:46

pk926
Contributor
Registered: 2017-01-08
Posts: 19

Re: [Discover one key]

The sniffer went all times wrong then...

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#11 2017-03-09 19:27:28

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: [Discover one key]

Antenna positioning and strength is key.

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